Electromechanical pilot light control



Jan. 10,1933. D. Rossl ET AL 1,394,006

' ELECTROMECHANICAL PILOT LIGHT CONTROL Filed Sept. 8. 1930 2 Sheets-Sheet l r v b 20 2/ w /7 22 -tool lnvenlors A llorney ELECTROMECHANICAL PILOT LIGHT CONTROL Filed p 8. 1950 2 Sheets-Sheet 2.

I I Inventors Z Mea/CI OIJV 44 (5 [/cZ/a A Home y Patented Jain, 1933 no irnuroxmbssrnnn metal. comma, or ALBANY, KNEW, Your:

,LJE-mB nECHam AL mmin nt coirrnon v apbiicatitanieaspteinbers, 930. Serial No 480500.

- 1 This; invention relates toa combination electrical and mechanical control or operat- "ing devicefor the "pilot; light ofa domestic gas rangefor" equivalent household stove or the like;

i 1 "a general frule conventional domestic gas ranges are provided with constantly? burning; pilot lightsfor igniting the sur-' rounding burner. Pilot lights when allowed 1 toburnconstantly consume an unnecessary amount of-gas, and are frequently dangerous when extinguished by draft, since this producesobjectionable gas leakage. With the foregoing in mind we 1 :turned on, whereby to provide a more praci burner. a I a The particular details and their relative "I2 tical and safe appliance for lighting the y arrangement and association constituting the compact and feasible structure will become Y apparent from the followingmore readily description and drawings;

"In 'the drawings? Figure 1 isa diagrammatic top plan view: V showing the. invention associated with the E burner and pilot light. g a V Figure 2 is ahorizontal section on the line 2 '2 of Figure 1 butywith the bar 27 shown in elevation; V g

Figure 3 is an enlarged'detail sectional:

and elevational view on the line 3-V3 of- Figure 1 but with the rocker 32 and the ball 31* p v V I g g V z/ -turn terminates in aball-like head 31. This constitutes the 'means. forshifting thebar 27 ythrough the. medium of the rockers '32.

In Figure 1 thereference numeralo designates generally the frame of the stove, 6 rep-- shown in elevation. 4

Figure 4 is a section taken approximately on the plane of the line 44 of Figure 1.

resents the gas supplypipe or conduit and the numerals 7 indicate the burner. These burners are connected 1 with the pipe 6 in the: v k

;;prvotally mounted betweenE t endS asat-SS 95 c conventional way and are provided with the usual turning handles 8 for'convenient' operation.

' The numeral 9 designates the gas supply pipe leading to the centralized pilot general-1 1y represented at 10. This pilot includes themedium of the conductor 15.

"plug 7 j xTh'e rod 23 is operated by'a be p pivotally supportedon the. bracket-26 onithe frame of the stove. J The bellcrank in turnis ioperatedthroug'h the medium of an actuating bar 27 sli'dably' mounted in bracket' 28xr lt,

.willibeiobserved that the actuatorbar '27 is customarya apertured shield 11. In accordance' with the; present invention there'is a -v'alve 12 located inthe line-9,'and this is provlded with a spring closed valve element 13' which-is -normallyclosed.

v M Theimprovement comprises an electrical sp'arkproducing device atjl l which is associated with the 'jet of the pilot light 10. T'fCurrent is-suppliedto this device 14: through the This conduc toro 'is connected to a coil 16 mountedin a 7 suitable firame 171. The coil in turnis'conl .nect'ed-with: a" transformer 18. -The tran'shave developed a construction which is characterized partly by mechanical details and partly byelectrical means for bringing the pilot light;

" into play only when the gasburners are former hasza lead'wire'1'9provided with a conventional floor; or wall socket. I v

I; Th'e current in the coil is controlled through the medium of a make and break I device or switch generally represented at'21. 'The contacts of this are normally spaced" "apart. wAninsulation'washer'22 on a pushpull rod 23 serves toclose the switch. The numeral 24: designatesua springwhich re turns the frod-ato normal" position; to allow the j'sw1tch-to' automatically open; 1

llcran'k .25

formed intermediate its ends with a valve A; opening element29, which is located toengage the "spring pressed valve element-13,1

' Each oscillatory shaft portion of each hana-, dleS is .-formed with a stub shaft 30 which in served that the rocker 32 embodies an up- :wardly curried cam;33 jhavingfa seatBl in Which theball31 is received. Therocker is and" the long-end portion 36, is counter- I weighted to automatically return the; rocker into theposit'ion represented in Figure '31; .,:ijTh e .swinging motion off this, rockerj ;is ilimitdbinohe; direction byifstop pins 37, g In ,i

20 designed tobe. connectedwith the operation, it will be observed that by catchinghold of the handle 8 and pulling it out-- wardly in the usual way to turn on the gas, the ball equipped shaft 30 will exert an endwise thrust on the bar 27 through the medium of the adjacent rocker 32. As the handle 8 is turned completely out to completely open the gas jets, the ball 31 will swing clear-of the trip rocker 32 due to the fact that the ball 31 is swung outwardly away from the rocker 32.

As the bar 27 is thus shifted over, the device 29 will open the valve 18 to allow gas to flow through the pipe 9 and pilot 10. At the same time, the push pull link or rod 23 will close the switch 21. The electrical means will then come into play to produce the desired spark at the device 14 for igniting the pilot light 10. The flame jet from the pilot light will in turn ignite the burner 7 in the usual way.

The spring means 24 will then come into play to return the parts to their normal positions. As the handles 8 are turned back to valve closing position, the knobs or balllike projections 31 will ride over the respective cams 83 so as to permit the device to become set again for subsequent operation.

A construction of this character provides a dependable electro-mechanical means for actuating the pilot light momentarily and for sufiicient periods to ignite the burners 7. As the parts of the apparatus go back to normal position under the action of the spring 24, the pilot light will be extinguished, since it will not be needed again until the burners are turned on for ignition.

The gist of the inventive conception comprehends a structure wherein the operation of the control handles for the main gas supply valves to the burners serves to actuate mechanical means for closing an electric switch and to bring into play a source of electrical supply for producing a spark of sufficient intensity to ignite the pilot lightsufficiently long to allow the burners 7 to become lighted.

The structure is safe and sane and fulfills the requirements of an appliance of this kind in a highly satisfactory manner.

It is thought that persons skilled in the art to which the invention relates will be able to obtain a clear understanding of the invention after considering the description in connection with the drawings. Therefore, a more lengthy description is regarded as unnecessary.

Minor changes in shape, size, and rearrangement of details coming within the field of invention claimed may be resorted to in actual practice if desired.

We claim:

Means for closing a switch by the operastructure and having a part thereon for closing the switch when the rod is moved in such direction, spring means for holding the rod in a position with the switch opened, a bar slidably supported by the structure and arranged at right angles to the rod, a bell crank pivotally supported by the structure and having one end connected with the rod and its other end connected with the bar for communicating movement of the bar to the rod, a projection on the handle, a cam lever fixed to the bar engaged by the projection when the handle is moved in one direction for imparting movement to the bar to move the rod to a switch closing position, said projection riding over the cam and tilting the same on opposite movement of thehandle, and means for normally holding the cam lever in a position where it will be engaged by the projection.

In testimony whereof we aflix our signatures.

DOMENICK ROSSI. NICOLA COLICCHIO.

tion of a turn handle comprising a supporting structure, a rod slidably supported by said 

